panic: invalid allocation length: 0x0

goroutine 573 [running]:
panic({0xfe3ca0, 0xc000a36190})
	GOROOT/src/runtime/panic.go:1147 +0x3a8 fp=0xc000e0b090 sp=0xc000e0afd0 pc=0x435148
gvisor.dev/gvisor/pkg/sentry/pgalloc.(*MemoryFile).Allocate(0xc00182e000, 0x13919b0, {0xc001836000, 0xc000e0b208})
	pkg/sentry/pgalloc/pgalloc.go:417 +0x545 fp=0xc000e0b1a0 sp=0xc000e0b090 pc=0x7d0865
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).getPMAsInternalLocked(0xc0008d0000, {0x13919b0, 0xc001836000}, {0xc0008d6000, 0x895527}, {0x0, 0xc000385040}, {0x0, 0x1, 0x0})
	pkg/sentry/mm/pma.go:243 +0x1746 fp=0xc000e0b5c8 sp=0xc000e0b1a0 pc=0x87dfc6
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).getPMAsLocked(0x876cc0, {0x13919b0, 0xc001836000}, {0xc0008d6000, 0xc000e0b6b8}, {0x9a5f78, 0xc0004b6f58}, {0x0, 0x1, 0x0})
	pkg/sentry/mm/pma.go:125 +0xbf fp=0xc000e0b658 sp=0xc000e0b5c8 pc=0x87c29f
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).withInternalMappings(0xc0008d0000, {0x13919b0, 0xc001836000}, {0x0, 0x0}, {0x0, 0xa9, 0x78}, 0x0, 0x12112b0)
	pkg/sentry/mm/io.go:542 +0x2e5 fp=0xc000e0b748 sp=0xc000e0b658 pc=0x877485
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).EnsurePMAsExist(0x558a1b6ccf68, {0x13919b0, 0xc001836000}, 0x0, 0xc000442ea0, {0xa0, 0x4d})
	pkg/sentry/mm/io.go:322 +0x77 fp=0xc000e0b790 sp=0xc000e0b748 pc=0x8762f7
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.getdents(0xc001836000, {{0x4}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}, 0x0)
	pkg/sentry/syscalls/linux/vfs2/getdents.go:53 +0x131 fp=0xc000e0b858 sp=0xc000e0b790 pc=0xcb3e31
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Getdents64(0xc001836000, {{0x4}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/vfs2/getdents.go:36 +0x3b fp=0xc000e0b8a8 sp=0xc000e0b858 pc=0xcb3cdb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001836000, 0xd9, {{0x4}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x825 fp=0xc000e0bcb0 sp=0xc000e0b8a8 pc=0x9b7ae5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001836000, 0x0, {{0x4}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4d fp=0xc000e0bd20 sp=0xc000e0bcb0 pc=0x9b8e0d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x13a22c8, 0xc0002fa4b0, {{0x4}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x65 fp=0xc000e0bd80 sp=0xc000e0bd20 pc=0x9b8ac5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001836000)
	pkg/sentry/kernel/task_syscall.go:257 +0x31a fp=0xc000e0be48 sp=0xc000e0bd80 pc=0x9b87fa
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0008d9000, 0xc001836000)
	pkg/sentry/kernel/task_run.go:247 +0xe45 fp=0xc000e0bf70 sp=0xc000e0be48 pc=0x9ac8c5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001836000)
	pkg/sentry/kernel/task_run.go:90 +0x1a2 fp=0xc000e0bfc8 sp=0xc000e0bf70 pc=0x9ab422
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start·dwrap·239()
	pkg/sentry/kernel/task_start.go:364 +0x26 fp=0xc000e0bfe0 sp=0xc000e0bfc8 pc=0x9b6246
runtime.goexit()
	src/runtime/asm_amd64.s:1581 +0x1 fp=0xc000e0bfe8 sp=0xc000e0bfe0 pc=0x4692a1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:364 +0xe7